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The ratio of failure of the CNC lathe tool holder system is relatively high

Author: Site Editor     Publish Time: 2021-03-10      Origin: Site

The ratio of failure of the CNC lathe tool holder system is relatively high in the operation of the CNC lathe, and there are many reasons for the failure. Tool holder motor overload alarm number: 700022. These two signals appear because the auxiliary contacts of the air switch are connected to the PI. Titanium Machinery is a key product of C, which is the main product of the company, which is the main product of rotary head, screw, shaft machining, CNC lathe machining, shank shank and collet post. When this switch is turned off, the CRT displays an alarm message. When the motor is overcurrent, overheated or shorted, the air switch will open. The conditions for generating this fault are generally the following:

Smashing the car. This phenomenon generally occurs when the tool is cut, the amount of cutting is too large, or the G54 (zero offset) setting is incorrect. When this happens, the tool slams into the workpiece (or the chuck), creating a boring phenomenon. At this time, the internal worm gear of the tool holder (six-station) is disengaged, and the sprocket is idling, and the tool change cannot be performed. The fault belongs to mechanical failure, the mechanical part of the tool holder can be detached, the chain is hung up (the sprocket head has a sprocket), the worm is manually screwed in to make it fully mesh with the worm wheel, and the meshing gap is checked. If there is no gap, the fault is Can be solved.

The servo system is faulty. According to the working principle and the fault phenomenon, the tool holder rotation is driven by the servo motor. When the motor starts, the servo motor generates an alarm, cuts off the servo power, and feeds back to the NC system to display the tool rack motor overload alarm information. No problems were found in the mechanical part and the servo unit. After testing, the tool post motor burned out and the servo motor was replaced.

The photoelectric sensing device failed. This phenomenon is manifested by the misalignment of the photoelectric sensing device or the obstruction of the light source, and the tool holder cannot accept the tool change signal of the system. After the optical inductive device is disassembled to reassemble or clean the light source hole, the tool holder returns to normal.

Electrical failure. The relay of the tool post controller in the control cabinet trips or burns, causing the system to fail to supply power to the tool holder. When the relay is powered on or the relay is replaced, the alarm can be released.


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